Rail-engaging brake



R. JONES.

RA lL ENGAGlNG BRAKE. APPLI CATION FILED FEB. 8. I919- RENEWED MAY 31. 1921.

1,388,047 Patented Aug. 16, 1921.

2 SHEETSSHEET I.

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R. JONES.

RAIL ENGAGING BRAKE.

APPLICATION FILED FEB. a. 1919. RENEWED MAY 3%,192'1.

1,388,047, Patented Aug. 16, 1921.

2 SHEETS-SHEET 2- gvwewtoz j NITED STATES PATENT nussnr. JONES, or ronrmc, :rrrcnreran.

RAIL-ENGAGING BRAKE.

I Specificaticnof Letters Patent. Patgnted Aug, 16 1921,

Application filed February a, 1919, Serial No. 275,774. Renewed May 31, 192 semi No. 473,780.

To all whom t'may' concern: Be it known that I, RnssEL JoNns, a citizen of the United States, residing at Pontiac, in the county of Oaklandand State of l .f[ichigan, have invented new and useful Improvements in Rail-Engag ng Brakes, of whichi'the followingis a specification.

This invention relatesto railway brakes.

and has for its object the provision on each truck of a railway-vehicle of a plurality of brake members movable into engagement with the rails,"thesebrake members being arranged in pairs on the sides of the truck and the members. in each pair'belng oppositely disposed whereby to exert an efiicient braking action regardless of the direction of travel.

An important object is the provision of a brake mechanism of this character in which the brakes are set by introducing.

compressed air within a cylinder in which is movable a piston connected by a link and lever arrangement with the pivoted brake members whereby all the brake members may be simultaneously set. 7 7

Another object is the provision of a brake mechanism of this character in which springs are provided for automatically releasing the brakes when the a1r pressure 1s relieved.

An additional object is the provision of a brake mechanism of thischaracter which will be comparatively simple and ineXpen-' sive in manufacture and installatiomhighly ciiicicnt and durable in use and a general improvement in the art. 7

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illusbrakes in their set position.

usual wheels D.

Fig. 3 is a top plan view and Figs'.& and

5 are detail views.

Referring more particularly to the drawings, the letter A designates a truck of ordinary construction including the. side frameB, a bolster C In carrying out my invention provide and provided with the! :upon each side of the truck A a pairof brake members 10 pivotally connected with the bolster C' as shown at 11 and arranged n divergent relation. At their free ends, 'the brill-remembers 10 are provided with detachable'shoes 12 properly shaped for engagement upon the rails. Pivoted upon each frame Bq'as shown at 13 are angle Marc connected by a connecting rodf19'.

wherebythe anglelevers will have simultaneous movement. 7

In order that the brakes may be moved to r operative position, I provide upon some suit able portion of thetr'uck a cylinder 20 within which 1s movable a piston 21 from which extends a piston rod 22 pivotally connected shown at 23 with the free end of an upwardly extending arm 24 formed on one of the angle levers 14. A pipe 25 leading from any suitable source of compressed air com- 20 to the rear of thepiston 21 and may be provided with any suitable form of control valve, not shown, whereby the supply of air admitted to the cylinder may be regulated. In order that the brake members on both sides of the truck may be operated simul '80 .municates with the interior of the cylinder I taneously, it is preferable that the freeends of the arms 24 be connected by a suitable rod 26 to which the piston rod 22 is connected.

In order to provide means whereby the brake members 10 will be normallyheld in retracted position out of engagement with the rails, I provide at each side of the truck upon thew connecting rod 19 a spring 27 which has one'end bearing against a collar 28 on the rod and itsother end bearing against an apertured ear extending from" the bolster C. The natural resilience of the springs 27 will hold the angle levers 14: in

1 such a position that the lower ends of the brake members 10 will be elevated slightly as will be apparent from an inspection of the drawing In the use of the device, when it is desired to set the brakes, it is merely necessary that the operator manipulate the control valve upon the piston 21 will be moved outwardly resulting in swinging movement of the angle levers 1% in a downward direction. As the arms 15 are swung downwardly the links 16 will force the lower ends of the brake members 10 downwardly into engagement with the rails. A very efficient braking action will thus be produced.

While I have shown and described the preferred embodiment of the invention, it will of course be readily understood that I reserve the right to make such changes in the form, construction and arrangement of parts as will not depart from the spirit of the invention nor the scope of the subjoined claims. s

I claim 1. A brake mechanism for railway trucks comprising a pair of divergently arranged downwardly extending brake members pivoted upon each side of the truck, rail engaging shoes on the lower ends of said brake members, a pair of angle levers pivoted upon each-side of the truck, links pivotally connected with the lower ends of said brake members and with the corresponding arms of said angle levers, a connecting rod connecting the other arms of said angle levers whereby said angle levers will have simultaneous movement, an auxiliary arm formed on one angle lever at each side of the truck,

a rod connecting the free endsof said auxiliary arms, means for holding said brake members normally elevatedand means for exerting a pull upon said rod.

2. A brake mechanism for railway trucks comprising a pair of divergently arranged downwardly extending brake members pivoted upon each side of the truck, rail engaging shoes on the lower ends of said members, a pair of angle levers pivoted upon each side of the truck, links pivotally connected with the lower ends of said brake members and with said angle levers, a connecting rod connecting said angle levers whereby the latter will have simultaneous movement, and means for moving said angle levers.

In testimony whereofI affix my signature.

RUSSEL J ONES 

